The stylish and exquisite Air Quality Detector with a digital screen displays the working status at a glance. High-quality sensors, accurate, high-efficiency, and energy-saving. Air Quality Detector with high-precision temperature & humidity sensor detection, real-time display of values; temperature display 0—40 °C (32—-99 °F), humidity display 20%—-95%. Air Quality Detector uses a high-precision CO2 to detect and display the CO2 concentration value in reality. With high-precision TVOC / HCHO sensor to detect and display the value in real-time. This Air Quality Detector Comes with a Full !!! Features: Indoor CO2 Meter Digital LED screen Temperature and humidity display Show CO2 concentration & remaining battery Display HCHO & TVOC concentration Show CO2 concentration level & alarm prompt Different colors are used to display the concentration level 400to 800 ppm-green display-excellent 801 to 1200 ppm-display-Yellow 1201 to 2000ppm-orange display-Poor 2001 to 6000 ppm-red display-severely exceeded Can be placed on a desktop or hang on the wall Specifications: Product: Air Quality Detector Model: SM AQD01 Voltage: 5V LED Display: Yes Built-In Speaker: Yes Alarm Type: Sound+Light Alarm Display value range: 400—-6000ppm TVOC concentration Range: 0—-2 mg/m HCHO Concentration Range: 0—-1 mg/m 3 Battery: Built-In Rechargeable Battery Charging Interface: USB-C Cable Weight: 250g Color: Silver Package Included: 1 x Air Quality Detector 1 x Selfadhesive Wall Hook 1 x USB-C Charging Cable 1 x Mounting Screw 1 x User Manual 1 x Retail Box